CN209764288U - Thermocouple mounting block connected in series into crawler-type heater - Google Patents
Thermocouple mounting block connected in series into crawler-type heater Download PDFInfo
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- CN209764288U CN209764288U CN201920935137.4U CN201920935137U CN209764288U CN 209764288 U CN209764288 U CN 209764288U CN 201920935137 U CN201920935137 U CN 201920935137U CN 209764288 U CN209764288 U CN 209764288U
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- thermocouple
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Abstract
The utility model discloses a thermocouple mounting block which is connected in series into a crawler-type heater, wherein the mounting block and a heating block in the crawler-type heater have the same interconnection structure so as to be mutually connected with the heating block to form the integral crawler-type heater; and a mounting hole is formed in the mounting block for mounting a screw type thermocouple. The utility model discloses an installation piece can concatenate into the crawler-type heater and install screw formula thermocouple for screw formula thermocouple is used for the temperature measurement of the work piece by the heating of crawler-type heater, and obtains accurate measuring result.
Description
Technical Field
The embodiment of the utility model provides a thermocouple installation piece that embodiment relates to crawler-type heater, in particular to concatenate into crawler-type heater.
Background
The crawler-type heater is a common flexible heater, can be attached to a workpiece for heating, is generally formed by connecting heating wires in series with ceramic heating sheets, is provided with a quick plug connector and the like, and is commonly used for pre-welding preheating or post-welding heat treatment (collectively called welding heat treatment) of an industrial pipeline field welding connector in the industries of electric power, chemical engineering and the like.
The field pipeline heat treatment generally needs a heater, a thermocouple, heat preservation cotton, a heat insulation blanket, iron wire binding and the like. The heater is used for heating the pipeline; the thermocouple is used for measuring the temperature of the pipeline; heat insulation blankets, heat insulation cotton and the like are used for covering heaters and pipelines to keep the temperature; the heat insulation iron wire or iron binding belt is used for fixing the heater, the thermocouple, the heat insulation cotton and the like.
The existing pipeline heat treatment mode is generally as follows: thermocouples are arranged on the pipeline at the positions specified by the process specification, such as the positions of a welding seam, a heat affected zone, a base material and the like in the axial direction and the positions of 12 o ' clock, 3 o ' clock, 9 o ' clock and the like in the circumferential direction, and are used for measuring the temperature and providing signal feedback for controlling the temperature of the heater. The commonly used thermocouples are K-type sheathed thermocouples and plain wire thermocouples. The K-shaped armored thermocouple is fixed on the pipeline in a manner of iron wire binding and the like, and the simple wire-shaped thermocouple is used for welding the cathode and the anode of two wire shapes on the pipeline by using an energy storage type welding instrument. After a thermocouple is installed on the surface of the pipeline, the crawler-type heater covers the thermocouple and the surface of the pipeline, then the heater is fixed by an iron wire, and a heat insulation blanket, heat insulation cotton and the like are coated outside the heater. There are 4 layers of structures on the pipeline section: pipes, thermocouples and lead-out wires, heaters, and insulation wool (or heat insulation blankets).
The arrangement of the crawler heater, the thermocouple and the like has the following problems: the thermocouple is bound by iron wires or welded and fixed, and the field operation wastes time and labor; the thermocouple and the outgoing line are arranged in the heater, and the thermocouple and the outgoing line are easily influenced by the gravity of the heater after the heater is coated outside to cause slippage and falling, so that the measurement result is inaccurate; an iron wire for binding the thermocouple is easy to expand due to heating, so that the contact between the measuring end part of the thermocouple and the surface of the pipeline is poor, and the measuring result is inaccurate; in addition, the operator cannot visually recognize the dislocation of the thermocouple from the outside and take corrective measures in time; in addition, according to the arrangement mode of the existing heater and thermocouple, a heat insulation blanket or heat insulation cotton is not generally adopted between the thermocouple and the heater for isolation, so that the heating of the heater on the pipeline is avoided being influenced, the local non-uniformity of a heat treatment temperature field is caused, and the safety of the pipeline is influenced, but on the other hand, the thermocouple measurement result is influenced by the heat of the heater and is inaccurate due to the fact that the thermocouple is not isolated from the heater. In addition, the existing arrangement mode of the heater and the thermocouple cannot adopt a screw type thermocouple to measure the temperature of the pipeline.
SUMMERY OF THE UTILITY MODEL
One of the objects of the utility model is to provide an in order to replace the installation piece of heating piece in concatenating into crawler-type heater, solve the thermocouple installation inconvenience in prior art, be difficult for fixing and measure unsafe problem, solved the problem that current crawler-type heater can't adopt screw formula thermocouple measurement temperature simultaneously.
The utility model discloses a thermocouple installation piece that concatenates into crawler-type heater, characterized in that, the installation piece has the same interconnect structure with the heating piece in the crawler-type heater in order to interconnect with the heating piece and constitute whole crawler-type heater; and a mounting hole is formed in the mounting block for mounting a screw type thermocouple.
According to an exemplary embodiment, the mounting hole includes a large diameter portion and a small diameter portion, the small diameter portion being used for inserting the screw type thermocouple, and the large diameter portion being used for mounting a nut threadedly coupled with the screw type thermocouple.
According to an exemplary embodiment, a thermal insulation means is provided in the mounting hole to thermally insulate the screw type thermocouple and the nut from the mounting block.
According to an exemplary embodiment, after the screw type thermocouple is installed in the installation block, an end portion thereof protrudes out of the installation hole.
According to an exemplary embodiment, the mounting hole is perpendicular to a surface of the mounting block that contacts the workpiece.
According to an exemplary embodiment, the mounting hole is located at a center position of a surface of the mounting block, which surface contacts the workpiece.
According to an exemplary embodiment, the mounting block further comprises a through hole therein for penetrating the heating wire; and the through hole is parallel to the surface of the mounting block, which is in contact with the workpiece, and is staggered with the position of the mounting hole.
According to an exemplary embodiment, the through holes are two and are respectively located at two end sides of the mounting block.
According to an exemplary embodiment, one end of the mounting block comprises a male plug connector and the other end comprises a female plug socket.
According to an exemplary embodiment, the through hole communicates with the plug groove and passes through the plug.
According to an exemplary embodiment, the mounting block is made of the same material as the heating block.
The utility model discloses an installation piece can concatenate into the crawler-type heater and be arranged in installing screw formula thermocouple for screw formula thermocouple can be used for by the temperature measurement of the work piece of crawler-type heater heating, and obtains accurate measuring result. Simultaneously, through concatenating in crawler-type heater the utility model discloses a thermocouple installation piece has overcome all sorts of drawbacks of the fixed thermocouple of current ligature or welded type, can conveniently install and fix the thermocouple for the measuring result of thermocouple is more accurate.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only for the convenience of illustrating the concept of the present invention, and are not intended to limit the present invention.
In the drawings, there is shown a schematic structural diagram according to an embodiment of the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of the various components and the relative sizes therebetween shown in the drawings are merely exemplary, and those skilled in the art may additionally design components having different shapes and sizes according to actual needs.
Fig. 1a is a schematic plan view of a mounting block according to an embodiment of the invention;
FIG. 1b is a schematic cross-sectional view of the mounting block of FIG. 1 a;
Fig. 1c is a structural view illustrating a state where the mounting block of fig. 1a is used to mount a screw type thermocouple.
FIG. 2 is a schematic structural view of a track heater including one example of the mounting block of FIG. 1 a.
FIG. 3 is a schematic structural view of an arrangement of the track heater according to FIG. 2 when used to heat a pipeline;
FIG. 4 is a cross-sectional schematic view of the arrangement of the track heater of FIG. 3.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. In addition, in the following description, a description of a part of known structures and techniques is omitted.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The structure of the thermocouple installation block of the present invention connected in series to the crawler heater will be described in detail below with reference to the embodiments.
The utility model provides a thermocouple mounting block connected in series into a crawler heater, wherein the mounting block and a heating block in the crawler heater have the same interconnection structure so as to be connected with each other to form the crawler heater; and a mounting hole is formed in the mounting block for mounting a screw type thermocouple.
The utility model discloses an installation piece can concatenate into the crawler-type heater and be arranged in installing screw formula thermocouple for screw formula thermocouple can be used for by the temperature measurement of the work piece of crawler-type heater heating, and obtains accurate measuring result. Simultaneously, through concatenating in crawler-type heater the utility model discloses a thermocouple installation piece has overcome all sorts of drawbacks of the fixed thermocouple of current ligature or welded type, can conveniently install and fix the thermocouple for the measuring result of thermocouple is more accurate.
Fig. 1a shows a schematic plan view of a mounting block 20 that may be used in a track heater according to an example embodiment of the invention. Fig. 1b is a schematic cross-sectional view of the mounting block 20. Fig. 1c is a structural view illustrating a state where the mounting block 20 is used to mount the screw type thermocouple 50.
As shown in fig. 1a to 1c, a mounting hole 21 for mounting the screw type thermocouple 50 is formed in the mounting block 20. The mounting hole 21 opens through the mounting block 20 perpendicularly to the surface of the mounting block 20 that contacts the workpiece (i.e., the spreading surface of the track heater). It is preferable that the mounting hole 21 is located at a central position of the surface of the mounting block 20, and the mounting hole 21 includes a small diameter portion 21a and a large diameter portion 21b, the small diameter portion 21a being used for inserting the screw type thermocouple 50, and the large diameter portion 21b being used for mounting a nut (not shown) which is threadably coupled with the screw type thermocouple 50 to fix the screw type thermocouple 50. The small diameter portion 21a of the mounting hole 21 may be circular in shape, and the large diameter portion 21b may be hexagonal in shape. As long as the screw type thermocouple 50 can be properly installed, the present invention does not limit the shape of the installation hole.
The mounting block 20 includes a male connector 22 at one end and a female connector 23 at the opposite end. The mounting block 20 further includes a through hole 24 therein for penetrating the heating wire. The through-hole 24 extends parallel to the surface of the heating block 20 contacting the workpiece, and the position of the through-hole 24 should be offset from the mounting hole 21. A through hole 24 may open in the mounting block 20 at the location of the plug 22 and the plug groove 23, communicate with the plug groove 23 and pass through the plug block 22. Fig. 1a shows two through holes 24 at both side ends of the mounting block 20. The mounting block 20 of this embodiment may be incorporated in-line into a track heater having a similarly configured heating block as an integral part of the track heater. In this track heater, the heating block has the same basic structure as the mounting block 20. That is, the heating block to which the mounting block 20 is attached may have the same structure as the mounting block 20, except that there are no mounting holes, thereby facilitating the stringing of the mounting block 20 into the heating block to form an integral track heater.
In one embodiment, the mounting block 20 may be made of the same ceramic material as the ceramic heating block in the track heater. In this case, in order to obtain more accurate measurement results, a heat insulation means 25, such as heat insulation cotton, for thermally insulating the screw type thermocouple 50 and the nut from the mounting block 20 may be optionally provided in the mounting hole 21. Therefore, the measuring result of the thermocouple is not influenced by the heat of the mounting block and the surrounding heating block, and the measuring result is more accurate.
According to some embodiments, it is preferable that the mounting hole 21 is sized such that a measuring end thereof protrudes outside the mounting hole 21 after the screw type thermocouple is mounted in the mounting block 20. In this way, when the crawler heater is wrapped around the outside of the pipe, the measuring end portion of the screw thermocouple 50 can contact the pipe more reliably, so that an accurate measurement result is easily obtained. In addition, the surface of the mounting block 20 contacting the pipe may be provided with a concave surface to facilitate close contact with the pipe, making it easier to obtain a measurement result by the screw type thermocouple 50.
FIG. 2 is a schematic diagram of a track heater 100 including one example of the mounting block 20 of FIGS. 1a-1 c. As shown in fig. 2, the track heater 100 includes a plurality of interconnected heating blocks 10 therein. In particular, unlike prior track heaters, the track heater 100 also includes at least one mounting block 20 that replaces a corresponding number of heating blocks 10 in the track heater 100 and has the same interconnection structure as the heating blocks 10 in the track heater 100, so that the mounting block 20 can be interconnected with surrounding heating blocks 10 as one heating block, forming an integral track heater. The mounting block 20 mounts a screw-type thermocouple to measure the temperature of a workpiece, such as the pipe 40, heated by the track-type heater 100.
The construction of the track heater 100 may employ various conventional track heater constructions in addition to the mounting block 20 that is threaded into the heating block 10. For example, the track heater 100 includes a power connection cord 30 as a conventional track heater; each heating block 10 in the track heater 100 may be a conventional ceramic heating block; the interconnecting structure of each heating block 10 may comprise the same male and female mating structure as the mounting block 20, i.e. one heating block 10 comprises male plug connectors and the other heating block 10 comprises female plug grooves, so that the heating blocks 10 can be plugged together with each other and with the mounting block. In addition, each heating block 10 may include therein heating wire through-holes communicating with each other. The heating wire through-hole may also serve as an interconnection structure for integrally connecting the heating block 10 and the mounting block 20 when the heating wire is penetrated. Thus, each mounting block 20 can be strung into the entire track heater 100 as one heating block 10. The material of the mounting block 20 may be the same as or different from that of the heating block 10. The number and location of the mounting blocks 20 may be selected according to the requirements of the actual measured workpiece. This can be done by the manufacturer of the track heater 100 while it is being manufactured.
Adopt the utility model discloses when crawler-type heater 100 heats work piece such as pipeline, need not arrange temperature measuring device on the pipeline alone, simplified process flow, practiced thrift man-hour. In addition, the basic structure of the track heater 100 of the present invention is consistent with that of a conventional track heater, and can be directly used instead of the conventional track heater without bringing extra burden to the operator.
Fig. 3 is a schematic structural view of an arrangement when the track heater 100 according to one application example is used for heating the pipe 40. Fig. 4 is a cross-sectional schematic view of the arrangement of the track heater 100 of fig. 3. As shown in fig. 3 to 4, the track heater 100 is wrapped on the pipeline 40 for heating the pipeline 40, and an insulation layer 60, such as a heat insulation blanket and heat insulation cotton, is disposed outside the track heater 100. The track heater 100 includes a plurality of mounting blocks 20, each mounting block 20 having a screw-type thermocouple 50 coupled thereto for measuring the temperature of the pipe 40.
When the crawler-type heater 100 is used for heating a pipeline, corresponding heating operation can be performed on the pipeline only by installing the screw-type thermocouple 50 on the installation block 20, then coating the crawler-type heater 100 on the pipeline, and coating the heat preservation layer 60 such as heat preservation cotton on the outer part of the crawler-type heater 100 as a heat insulation device. The temperature change of the pipeline can be monitored simultaneously in the heating process so as to adjust the heating temperature timely.
Specifically, when the track heater 100 with the mounting block 20 of the present embodiment is used to heat a pipeline, the operation is as follows:
Firstly, a screw type thermocouple is inserted into a central round hole of a mounting block and is firmly fixed by a nut, and the end of the screw type thermocouple generally slightly protrudes out and is slightly higher than the surface of a heater by 1-2mm, so that the end of the thermocouple is in closer contact with the surface of a pipeline.
And then, covering the surface of the pipeline to be heat-treated with the side of the crawler-type heater, which is provided with the thermocouple end head, facing the pipeline to be heat-treated. The width of the pipe to be heated by heat treatment is checked against the width of the heater and aligned. And checking whether the position of the mounting block on the heater is consistent with the position of the temperature to be measured of the pipeline.
Then, the heater is fixed by adopting an iron wire (or a steel belt), and a plurality of channels can be bound according to the firmness degree and the effect. The common iron wires are bound at the head, the tail and the middle of the heater in the width direction and at the position with the mounting block.
The thermocouple connections were then checked and the thermocouple was insulated from the heating block by sheathing it with a heat insulating blanket. And leading out a thermocouple connecting wire along the axial direction of the pipeline and fixing the thermocouple connecting wire by using an iron wire.
then, the heater power connection wire is led out to the side along the axial direction of the pipeline and fixed by an iron wire.
And finally, coating the heater and the thermocouple with heat preservation cotton, and bundling with iron wires. The thickness and the width of the heat-insulating cotton need to meet the requirements of regulations.
Then, the heater and the thermocouple can be started to respectively carry out pipeline heating and temperature measurement.
The above operation sequence is not fixed and can be adjusted according to the needs. For example, mounting a screw-type thermocouple on a mounting block of a track-type heater may be performed after mounting the heater on a pipe.
When the crawler-type heater with the installation block provided by the embodiment of the utility model is used for heating a workpiece, the thermocouple is directly installed in the heater, so that the step of binding iron wires or welding and fixing the thermocouple is omitted, and the thermocouple is convenient to install; the thermocouple is arranged in the heater, so that the problems that the thermocouple slides and falls off due to the gravity of the heater when the heater slides and the contact between the measuring end part of the thermocouple and the surface of the pipeline is poor due to the fact that an iron wire for binding the thermocouple expands when heated are avoided; in addition, the thermocouple is fixed in position and can be observed from the outside; an insulating device can be arranged between the thermocouple and the heater without influencing the heating of the pipeline by the heater. Thereby, adopt and to have the utility model discloses a great deal of defect of prior art has been avoided to the crawler-type heater of installation piece, and the thermocouple can obtain accurate temperature measurement result.
In addition, in the prior art, when a track heater is used to heat a workpiece, a screw type thermocouple cannot be used to measure the temperature due to structural limitations. And adopt the utility model discloses the installation piece of embodiment is arranged in crawler-type heater for adopt screw formula thermocouple to measure the work piece with crawler-type heater heating and become possible, provide convenience for selecting suitable thermocouple.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A thermocouple mounting block connected in series into a crawler heater is characterized in that,
The mounting block and a heating block in the crawler-type heater have the same interconnection structure so as to be connected with the heating block to form the crawler-type heater; and is
mounting holes are formed in the mounting block for mounting screw type thermocouples.
2. The mounting block of claim 1, wherein the mounting hole includes a large diameter portion and a small diameter portion, the small diameter portion being used for inserting a screw type thermocouple, and the large diameter portion being used for mounting a nut threadedly coupled with the screw type thermocouple.
3. The mounting block of claim 2, wherein a thermal insulation means is provided in the mounting hole to thermally insulate the screw thermocouple and the nut from the mounting block.
4. the mounting block of claim 1, wherein the end of the screw-type thermocouple protrudes out of the mounting hole after being mounted in the mounting block.
5. The mounting block of claim 1, wherein the mounting hole is perpendicular to a surface of the mounting block that contacts a workpiece.
6. The mounting block of claim 1, wherein the mounting hole is located in a center position of a surface of the mounting block that contacts the workpiece.
7. The mounting block of any one of claims 1-6,
The mounting block also comprises a through hole for penetrating the heating wire; and is
The through hole is parallel to the surface of the mounting block, which is in contact with the workpiece, and is staggered with the position of the mounting hole.
8. the mounting block of claim 7,
the number of the through holes is two, and the through holes are respectively located on two end sides of the mounting block.
9. The mounting block of claim 8, wherein one end of the mounting block includes a male plug and the other end includes a female plug channel.
10. The mounting block of claim 9, wherein the through-hole communicates with the socket and passes through the spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920935137.4U CN209764288U (en) | 2019-06-20 | 2019-06-20 | Thermocouple mounting block connected in series into crawler-type heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920935137.4U CN209764288U (en) | 2019-06-20 | 2019-06-20 | Thermocouple mounting block connected in series into crawler-type heater |
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| Publication Number | Publication Date |
|---|---|
| CN209764288U true CN209764288U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920935137.4U Active CN209764288U (en) | 2019-06-20 | 2019-06-20 | Thermocouple mounting block connected in series into crawler-type heater |
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| CN (1) | CN209764288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146187A (en) * | 2019-06-20 | 2019-08-20 | 福建晋江热电有限公司 | A kind of the installation of TC block concatenated in tracklayer heater |
-
2019
- 2019-06-20 CN CN201920935137.4U patent/CN209764288U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146187A (en) * | 2019-06-20 | 2019-08-20 | 福建晋江热电有限公司 | A kind of the installation of TC block concatenated in tracklayer heater |
| CN110146187B (en) * | 2019-06-20 | 2024-05-24 | 福建晋江热电有限公司 | Thermocouple installation block connected in series in crawler-type heater |
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Address after: No.7 Anji Road, Andong Park, Jinjiang science and Technology Industrial Park, Quanzhou City, Fujian Province, 362271 Patentee after: Guoneng Shenfu (Jinjiang) Thermal Power Co.,Ltd. Patentee after: SHENHUA FUJIAN ENERGY Co.,Ltd. Patentee after: Guoneng (lianjiang) Gangdian Co.,Ltd. Address before: No.7 Anji Road, Andong Park, Jinjiang science and Technology Industrial Park, Quanzhou City, Fujian Province, 362271 Patentee before: FUJIAN JINJIANG COGENERATION Co.,Ltd. Patentee before: SHENHUA FUJIAN ENERGY Co.,Ltd. Patentee before: SHENHUA(FUZHOU)LUOYUAN BAY PORT&POWER Co.,Ltd. |